Etude House's #50 is a navy blue based nail polish with tiny duochrome flecks that range between magenta, purple, and blue. In the picture I used three coats and no top coat, so this polish is slightly less opaque than Etude's other nail polish offerings. The layers even out beautifully, however, and does not leave the nail feeling thick. The formula was great, with no pooling, gloppyness, or weird bubbles and clumps. This gets an A+ in my book!